Magnetic monopole research started a new chapter when the electroweak Cho-Maison monopole [1]} was reported. The mass of Cho-Maison monopole is infinite due to the point singularity at the origin. However, it has been shown that the solution can be regularized and the mass was estimated to be around 4 to 10 TeV [2]}. More recently, different methods were used to regularize the solution, it is reported that the new BPS bound for Cho-Maison monopole may not be smaller than 2.98 TeV, more probably 3.75 TeV [3]}. Another estimate puts the lower bound of the mass of Cho-Maison monopole at 2.37 TeV [4]}.
